Hello Gentoo Users! I would like to share my Postfix Dovecot documentation and full setup. The postfix uses the mariadb for storing the email,password with salted SHA-512 encryption on password. The attached file: ManagerProgram1.zip is a MariaDB SQL application. It try to process json user data for the email account, and CSV file to Domain data. After processing it writes to the MariaDB Postfix database. xbx.